How many flights depart from Austin to Illinois on average per week?

As of April 2026, 201 flights take off from Austin and land in Illinois each week. The most common flight departure day for this route is Wed, with 23% of weekly flights taking off on this day.

What is the cheapest airline that flies from Austin Bergstrom to Illinois?

Frontier, Delta, and Southwest are the most popular carriers operating from Austin Bergstrom to Illinois

How many flights depart from Austin to Illinois on average per day?

The number of flights available between Austin and Illinois is 28 per day as of April 2026. The most frequent departure time is 11:00AM, with 57% of daily flights leaving at noon.

What airlines fly to Illinois?

American Airlines, United Airlines and Frontier are the top three most popular airlines that fly to Illinois from Austin according to our data. American Airlines is the first choice among our users, with 49% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 5 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Austin Bergstrom Airport to Illinois?

Prices for flights from Austin Bergstrom Airport to Illinois refresh daily.

How many operators does momondo search for flights from Austin Bergstrom Airport to Illinois?

As of April 2026, there are 4 operators available to choose from for flights from Austin Bergstrom Airport to Illinois.

How old do you have to be to fly from Austin Bergstrom Airport to Illinois?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Austin Bergstrom Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$70 Cheap Flights from Austin to Illinois in 2026

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Find the cheapest flights from Austin to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:39 pm - 3:21 pm

AUS

STL

18h 42m

1 stop

9:55 pm - 9:02 pm

STL

AUS

23h 07m

1 stop

$140Frontier

Fri, Apr 24 - Sun, Apr 26

9:47 pm - 7:32 pm

AUS

STL

21h 45m

1 stop

8:17 pm - 5:18 pm

STL

AUS

21h 01m

1 stop

$151Frontier

Fri, Apr 24 - Mon, Apr 27

8:39 pm - 6:08 am

AUS

ORD

9h 29m

1 stop

11:28 am - 11:40 pm

ORD

AUS

12h 12m

2 stops

$182Multiple Airlines

Fri, Apr 17 - Thu, Apr 30

6:12 am - 7:51 pm

AUS

ORD

13h 39m

1 stop

5:50 am - 5:06 pm

ORD

AUS

11h 16m

1 stop

$187Multiple Airlines

Tue, Apr 14 - Sat, Apr 18

5:00 pm - 10:21 pm

AUS

MLI

5h 21m

1 stop

5:17 pm - 12:31 am

MLI

AUS

7h 14m

1 stop

$231Delta

Wed, May 13 - Sat, May 16

8:45 am - 1:54 pm

AUS

MLI

5h 09m

1 stop

3:47 pm - 11:15 pm

MLI

AUS

7h 28m

2 stops

$236United Airlines

Wed, May 13 - Sat, May 16

5:30 am - 12:53 pm

AUS

MLI

7h 23m

2 stops

3:47 pm - 11:15 pm

MLI

AUS

7h 28m

2 stops

$266United Airlines

Wed, May 13 - Sat, May 16

5:30 am - 11:23 am

AUS

BMI

5h 53m

1 stop

4:14 pm - 10:07 pm

BMI

AUS

5h 53m

1 stop

$285Delta

Sat, Jul 11 - Wed, Jul 15

6:00 am - 2:16 pm

AUS

BMI

8h 16m

2 stops

6:02 pm - 11:52 pm

BMI

AUS

5h 50m

1 stop

$290American Airlines

Tue, May 19 - Tue, May 26

5:00 am - 11:29 am

AUS

BMI

6h 29m

2 stops

5:54 pm - 11:54 pm

BMI

AUS

6h 00m

1 stop

$312American Airlines

Sat, Jul 11 - Wed, Jul 15

Spirit Airlines flights from Austin to Illinois

Our best Spirit Airlines deals on Austin to Illinois flight tickets

Spirit Airlines

Apr 9

AUS6:12 amAustin Bergstrom

13h 39m

1 stop

ORD7:51 pmChicago O'Hare Intl

Apr 13

ORD4:36 pmChicago O'Hare Intl

7h 48m

1 stop

AUS12:24 amAustin Bergstrom

$189

Spirit Airlines

Apr 14

AUS6:12 amAustin Bergstrom

11h 03m

1 stop

ORD5:15 pmChicago O'Hare Intl

Apr 18

ORD9:16 amChicago O'Hare Intl

14h 24m

2 stops

AUS11:40 pmAustin Bergstrom

$194

Spirit Airlines

Apr 13

AUS6:12 amAustin Bergstrom

13h 39m

1 stop

ORD7:51 pmChicago O'Hare Intl

Apr 14

ORD5:05 amChicago O'Hare Intl

10h 59m

1 stop

AUS4:04 pmAustin Bergstrom

$221

Frontier flights from Austin to Illinois

Our best Frontier deals on Austin to Illinois flight tickets

Frontier

Apr 24

AUS8:39 pmAustin Bergstrom

18h 42m

1 stop

STL3:21 pmLambert-St Louis

Apr 26

STL9:55 pmLambert-St Louis

23h 07m

1 stop

AUS9:02 pmAustin Bergstrom

$140

Frontier

Apr 24

AUS9:47 pmAustin Bergstrom

21h 45m

1 stop

STL7:32 pmLambert-St Louis

Apr 27

STL8:17 pmLambert-St Louis

21h 01m

1 stop

AUS5:18 pmAustin Bergstrom

$151

Frontier

Jun 2

AUS10:28 amAustin Bergstrom

8h 55m

1 stop

STL7:23 pmLambert-St Louis

Jun 9

STL8:08 pmLambert-St Louis

13h 05m

1 stop

AUS9:13 amAustin Bergstrom

$155

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Fri 4/24

8:39 pm-3:21 pm

1 stop18h 42m

Lambert-St Louis

Sun 4/26

9:55 pm-9:02 pm

1 stop23h 07m

$140

AustinSt. Louis

AUS - STL

AUSSTL

Austin Bergstrom

Fri 4/24

9:47 pm-7:32 pm

1 stop21h 45m

Lambert-St Louis

Mon 4/27

8:17 pm-5:18 pm

1 stop21h 01m

$151

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Fri 4/17

8:39 pm-6:08 am

1 stop9h 29m

Chicago O'Hare Intl

Thu 4/30

11:28 am-11:40 pm

2 stops12h 12m

$182

AustinChicago

AUS - ORD

AUSORD

Austin Bergstrom

Tue 4/14

6:12 am-7:51 pm

1 stop13h 39m

Chicago O'Hare Intl

Sat 4/18

5:50 am-5:06 pm

1 stop11h 16m

$187

AustinMoline

AUS - MLI

AUSMLI

Austin Bergstrom

Wed 5/13

5:00 pm-10:21 pm

1 stop5h 21m

Moline Quad-City

Sat 5/16

5:17 pm-12:31 am

1 stop7h 14m

$231

AustinMoline

AUS - MLI

AUSMLI

Austin Bergstrom

Wed 5/13

8:45 am-1:54 pm

1 stop5h 09m

Moline Quad-City

Sat 5/16

3:47 pm-11:15 pm

2 stops7h 28m

$236

AustinMoline

AUS - MLI

AUSMLI

Austin Bergstrom

Wed 5/13

5:30 am-12:53 pm

2 stops7h 23m

Moline Quad-City

Sat 5/16

3:47 pm-11:15 pm

2 stops7h 28m

$266

Quickest round-trip

AustinBloomington

AUS - BMI

AUSBMI

Austin Bergstrom

Sat 7/11

5:30 am-11:23 am

1 stop5h 53m

Bloomington-Normal

Wed 7/15

4:14 pm-10:07 pm

1 stop5h 53m

$285

AustinBloomington

AUS - BMI

AUSBMI

Austin Bergstrom

Tue 5/19

6:00 am-2:16 pm

2 stops8h 16m

Bloomington-Normal

Tue 5/26

6:02 pm-11:52 pm

1 stop5h 50m

$290

AustinBloomington

AUS - BMI

AUSBMI

Austin Bergstrom

Sat 7/11

5:00 am-11:29 am

2 stops6h 29m

Bloomington-Normal

Wed 7/15

5:54 pm-11:54 pm

1 stop6h 00m

$312

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Austin to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from Austin is in January. Flight prices, which tend to average around $208, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $240.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Austin to Illinois is on a Thursday when prices can be found for as low as $349. Flights from Austin to Illinois on a Sunday will generally be more expensive and average around $607. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from Austin to Illinois during this time can be as low as $238. Flights in the afternoon are often more expensive with an average ticket price of $461.

What is the cheapest Austin Bergstrom to Illinois flight route?

Fly from Austin Bergstrom to Chicago O'Hare Intl for the best Austin Bergstrom - Illinois flight prices

How far in advance should I book a flight to Illinois?

You are more likely to see cheaper flights to Illinois from Austin when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $277 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Austin for as low as $233 on momondo.

What cabin class options are available on Austin Bergstrom to Illinois flights?

There are 4 cabin classes available to choose from on Austin Bergstrom to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Austin to Illinois flights?

You could potentially save up to 9% on your flight if you consider stops on a Austin to Illinois flight.

Cheap Austin to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Austin to Illinois

Best Price Found	$182
Fastest flight time	2h 00m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Austin in the past 72 hours is $182. The best round-trip flight deal from Austin to Illinois found on momondo in the last 72 hours is $331.

The fastest flight from Austin to Illinois takes 2h 00m

Direct flights go from Austin to Illinois every day.

There are 98 airports in Illinois. From Austin there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Austin to Illinois

When did momondo last update prices for flights from Austin Bergstrom Airport to Illinois?
Prices for flights from Austin Bergstrom Airport to Illinois refresh daily.
How many operators does momondo search for flights from Austin Bergstrom Airport to Illinois?
As of April 2026, there are 4 operators available to choose from for flights from Austin Bergstrom Airport to Illinois.
How old do you have to be to fly from Austin Bergstrom Airport to Illinois?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Austin Bergstrom Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Austin to Illinois?
Based on momondo bookings for flights between Austin and Illinois, the leading plane model is Boeing 737-800, making up 20.54% of the total bookings. Other popular models include Airbus A319 with 14.86%, Airbus A320-100/200 with 12.86%, and Boeing 737 MAX 8 with 12.28%.

Best airlines flying from Austin to Illinois

Compare and see reviews for airlines that fly from Austin to Illinois with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $67	Free Cancellation	Rating 5.7 3,006 reviews	Search Frontier flights
Southwest	PriceFrom $143	Free Cancellation	Rating 8.0 4,334 reviews	Search Southwest flights
American Airlines	PriceFrom $159	Free Cancellation	Rating 7.1 11,545 reviews	Search American Airlines flights
United Airlines	PriceFrom $178	Free Cancellation	Rating 7.4 9,529 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Austin to Illinois?

Finding the right flight to Illinois from Austin is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Illinois quick and easy, saving you time and money.

Can I find flights from Austin to Illinois with flexible booking policies on momondo?

Yes. All flights to Illinois from Austin on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Austin to Illinois?

momondo provides multiple filters to help you find the best flight to Illinois from Austin. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Austin to Illinois right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Austin to Illinois flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your Illinois trip

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Popular cities in Illinois

Flights to New Yorkfrom $48

Flights to Los Angelesfrom $53

Flights to Orlandofrom $55

Flights to Miamifrom $55

Flights to Chicagofrom $59

Flights to San Franciscofrom $68

Flights to Las Vegasfrom $54

Flights to Washington, D.C.from $56

Flights to Bostonfrom $66

Flights to Atlantafrom $50

Flights to Dallasfrom $55

Flights to Fort Lauderdalefrom $56

Cheap flights from Austin to Illinois from $70

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Austin to Illinois departing on 5/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Spirit Airlines flights from Austin to Illinois

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How to get the cheapest flight ticket from Austin to Illinois

What is the cheapest month to fly to Illinois?

What is the cheapest day to depart on your flight to Illinois?

What is the cheapest time of day to depart on your flight to Illinois?

What is the cheapest Austin Bergstrom to Illinois flight route?

How far in advance should I book a flight to Illinois?

What cabin class options are available on Austin Bergstrom to Illinois flights?

Can stopping save me money on Austin to Illinois flights?

What is the cheapest airline that flies from Austin Bergstrom to Illinois?

What airlines fly to Illinois?

How many flights depart from Austin to Illinois on average per day?

How many flights depart from Austin to Illinois on average per week?

Cheap Austin to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Austin to Illinois

Best Price Found

Fastest flight time

Direct flights

Airports in Illinois

Frequently asked questions about flying from Austin to Illinois

Best airlines flying from Austin to Illinois

Compare and see reviews for airlines that fly from Austin to Illinois with momondo

Why use momondo?

An easier way to manage your Illinois trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Illinois

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